14 June, 2002 COPY QUALITY TROUBLESHOOTING
4-9
Trouble-
shooting
4.1.9 BLACK DOTS/SPOTS
Possible Cause (Printer)
• The surface of a roller is damaged or dirty (see the table above)
Action:
• Clean the rollers
• Replace the rollers if necessary.
H310T510.WMF
Rollers
Diameter
(mm)
Circumference
(mm)
Registration Roller 14.24 44.7
OPC Drum 30 94.2
Charge Roller 14 44.0
Development Roller 20 62.8
Transfer Roller 16.15 50.7
Hot Roller 30.8 96.9
Pressure Roller 25 78.5
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